46 CFR § 45.193
Towboat power requirements
April 15, 2021
The towing vessel must meet the following requirements:
(a) General. The towing vessel must have adequate horsepower (HP) to handle the tow, but not less than the amount specified for the routes below.
(b) Milwaukee and St. Joseph routes: a minimum of 1,000 HP.
(c) Muskegon route: a minimum of 1,500 HP.
[USCG-1998-4623, 67 FR 19690, Apr. 23, 2002, as amended at 75 FR 70604, Nov. 18, 2010]